| River Ridge to Castle Pines (Colorado) | 1,057.55 mi (1,701.97 km) |
| River Ridge to Castle Rock (Colorado) | 1,053.48 mi (1,695.42 km) |
| River Ridge to Castro Valley (California) | 1,894.04 mi (3,048.16 km) |
| River Ridge to Catalina Foothills (Arizona) | 1,230.84 mi (1,980.85 km) |
| River Ridge to Cataño (Puerto Rico) | 1,708.14 mi (2,748.99 km) |
| River Ridge to Cathedral City (California) | 1,558.21 mi (2,507.70 km) |
| River Ridge to Catonsville (Maryland) | 998.37 mi (1,606.72 km) |
| River Ridge to Cave Spring (Virginia) | 772.14 mi (1,242.64 km) |
| River Ridge to Cayce (South Carolina) | 604.07 mi (972.16 km) |
| River Ridge to Cayey (Puerto Rico) | 1,719.10 mi (2,766.63 km) |
| River Ridge to Cedar City (Utah) | 1,412.68 mi (2,273.49 km) |
| River Ridge to Cedar Falls (Iowa) | 876.61 mi (1,410.77 km) |
| River Ridge to Cedar Hill (Texas) | 437.14 mi (703.50 km) |
| River Ridge to Cedar Lake (Indiana) | 803.56 mi (1,293.20 km) |
| River Ridge to Cedar Mill (Oregon) | 2,058.90 mi (3,313.49 km) |
